Five powers delegated to Congress include laying and collecting taxes, declaration of war, to constitute tribunals, to regulate commerce and maintaining of the army, according to Cornell University. Delegated powers are sometimes referred to as enumerated powers and are established in section 8 of the first article of the U.S. Constitution.
Congress has power to declare war in the event of external aggression or foreign attacks, states Cornell University. The House of Representatives may also provide and maintain an army or navy. The U.S. Constitution also gives Congress the power to set taxes and to collect them accordingly. Other delegated powers include regulation of commerce with foreign countries and constitution of tribunals that are inferior to the supreme court.